67results about How to "Increase dissolved oxygen levels" patented technology

A hydroponic plant container with a reservoir of “highly oxygenated” nutrient solution that is the result of continuous direct air injection into the bottom of the reservoir, at a specific range of trajectories, along with continuous Coriolis effect mixing. The highly oxygenated nutrient solution is used to provide a deep water culture for the lower section of the plant roots, to saturate the middle section of the plant roots with fine droplets of the highly oxygenated nutrient solution, and to saturate the growing media and the upper section of the plants roots with a continuous drip of the highly oxygenated nutrient solution.

The invention relates to a subsurface flow constructed wetland device for enhanced nitrogen removal in the technical field of environmental engineering. The device comprises a pretreatment settling tank, a hydraulic drop aeration well and a wetland groove, wherein the wetland groove comprises an aerobic nitrating segment, an inspection well, an anoxic denitrification segment and a water collecting well in the water flow direction; the pretreatment settling tank is used for settling suspended matters to prevent follow-up structures from being blocked; hydraulic drop steps are arranged in the hydraulic drop aeration well to increase the dissolved oxygen concentration; active substrates capable of adsorbing ammonia nitrogen are filled in the aerobic nitrating segment, a perforated aerator pipe is vertically inserted and vascular plants are planted to increase the dissolved oxygen concentration in the packing layer, so that the smooth generation of the nitrification is guaranteed; a secondary water inlet pipe is connected into the inspection well to supplement the carbon source that the denitrification requires; efficient phosphorus removal substrates are filled in the anoxic denitrification segment to generate the denitrification, adsorb and remove phosphorus pollutants; the water collecting well is used for collecting treating water and discharging the water out of the device finally. Compared with the prior art, the device disclosed by the invention has the advantages that nitrogen in sewage is well treated and both the total nitrogen removal rate and the ammonia nitrogen removal rate can be up to more than 80%.

The invention belongs to the technical field of sewage treatment and specifically relates to a method for enhanced nitrogen removal of a tidal flow-horizontal subsurface flow hybrid constructed wetland and a system thereof. The system orderly comprises a non-powered automatic water intake device (8), a tidal-flow constructed wetland bed, a non-powered automatic water drainage device (2) and a horizontal subsurface-flow constructed wetland bed. The tidal-flow constructed wetland which is high in ammonia nitrogen oxidation effect and the horizontal subsurface-flow constructed wetland which is excellent in nitrate reduction capability are rationally combined into one system by thoroughly utilizing the characteristics of the aerobic environment of the former and the anaerobic environment of the latter; therefore, conditions are created for thorough nitration / denitrification; and simultaneously, a horizontal subsurface-flow wetland slow-release carbon source enhanced region (15) and a backflow well (19) are arranged in the horizontal subsurface-flow wetland bed, so that enhanced removal of total nitrogen in the sewage can be realized and secondary pollution on the carbon source is avoided at the same time.

The present invention provides an industry method for producing arachidonic acid grease by using mortierella alpine. The method is characterized by comprising the following steps: activating an original strain; carrying out seed culture; carrying out seed enlarge culture; and carrying out fermentation culture, wherein the fermentation culture comprises an initial fermentation stage, the seed enlarge culture liquid is inoculated in a fermentation tank to carry out stirring culture, glucose and edible oil are supplemented according to the situation, the initial fermentation stage is completed when bacterial concentration of the fermentation broth achieves 40% (by ??volume) and the dried mycelium total oil achieves 40 wt%, a post-fermentation stage starts, the fermentation broth is cooled to a temperature of 23-27 DEG C, sterile ammonia water is concurrently added to adjust the pH value to 8-9, standing fermentation is performed while the glucose content is controlled, the post-fermentation stage is completed when the arachidonic acid content is higher than 45 wt%, and the obtained fermentation broth is subjected to a fermentation treatment to obtain the grease containing the arachidonic acid. The industry method has the following characteristics that: a fermentation formula is simplified, specific yield of the arachidonic acid can be 10 gARA / L fermentation broth through the specific process control, a process is simple and easy to control, and industrial production is achieved.

The invention discloses a bacillus subtilis and a Gamma-polyglutamic acid preparation method that uses the bacillus subtilis strain. The strain is bacillus subtilis XN01 and is preserved in China Center for Type Culture Collection (CCTCC) on March 18th, 2008 with CCTCC NO. of M 208044; the Gamma-polyglutamic acid can be prepared with the strain through the steps of strain cultivation and preservation, seed fluid preparation, shaking fluid fermentation and Gamma-polyglutamic acid extraction. The Gamma-polyglutamic acid preparation method can achieve high synthesis efficiency of Gamma-polyglutamic acid in a low-cost fluid culture medium, is simple and has strong operability.

The invention relates to a microbial fuel cell constructed wetland device. The device consists of a hydrolysis acidification pool, a microbial fuel cell constructed wetland main body and an external circuit that are connected in order. The microbial fuel cell constructed wetland main body comprises a gravel water distribution layer, an anode area, an oxygen producer layer, a cathode area and an aquatic plant from bottom to top in order. The lower part on one side of the microbial fuel cell constructed wetland main body is provided with a water inlet, the other side top is equipped with a wateroutlet, the water inlet is communicated with a water outlet at the lower part on one side of the hydrolysis acidification pool through a pump and a pipeline, and a water inlet at the lower part on the other side of the hydrolysis acidification pool is communicated with a sewage inlet pipe. The external circuit consists of an anode, a cathode and a copper core lead connected to the anode and cathode, and a circuit switch is in tandem connection to the copper core lead. The wetland device provided by the invention has the characteristics of simple structure and convenient operation, and by regulating the electrode dissolved oxygen environment, can show excellent power production efficiency while strengthening the constructed wetland sewage treatment effect.

The present invention discloses a hydrolization and acidification - anaerobism and aerobism coupling biochemical degradation system, which belongs to the technical field of environment engineering and industrial waste water disposal. The system is used for disposing organic waste that is difficult to be degraded. The biochemical degradation system consists of two serially connected airlift internally circulating biological fluidized beds. The front airlift internally circulating biological fluidized bed is an anaerobe fluid bed which adopts micro-aeration operation and carries out hydrolization and acidification processing; and the rear airlft internally circulating biological fluidized bed is an anaerobism and aerobism coupling biological fluid bed which is constructed by filling macropore carriers and carries out the complete degradation of organisms. The organic waste water which is difficult to be degraded enters the anaerobic fluid bed first, and enters the anaerobism-aerobism coupled biological fluid bed after the hydrolization and acidification processing so as to be completely degraded. The system achieves high efficiency and quick coupling of the anaerobe degradation and the aerobe, and has the characteristics of high disposing efficiency, short residence time, small floor space, low investment, low running cost and so on. The method can be applied to the sequencing batch type disposal process, and can be applied to the continuous flow type disposal process as well.

The invention discloses a mobile oxygenation device for a bottom water body of an aquaculture pond. The oxygenation device comprises a solar power assembly, an upper layer water body extraction assembly, a first floating body and a second floating body, wherein the first floating body is used for bearing the solar power assembly; the second floating body is used for bearing the upper layer water body extraction assembly; the first floating body and the second floating body are connected integrally through a connecting rod; the solar power assembly comprises a solar power generation plate, a solar power source, a guide bracket and a driving motor; and the upper layer water body extraction assembly comprises an upper layer water body extraction barrel and propeller blades. With the adoption of the device, the oxygen production capability of phytoplankton in the pond is used, and supersaturated dissolved oxygen produced by the phytoplankton on the water body surface of the pond at noon is extracted to the anoxic water body at the bottom of the pond and stored, so that the dissolved oxygen content in the whole pond is significantly increased, and problems of oxygen deficiency at the bottom of a traditional pond, water quality stratification and previous insufficient utilization of the oxygen produced by the phytoplankton are solved. The solar plate is used as a power source, and the device is independent of external power sources and electric wires, so that the device can be used normally in unpowered regions.

The invention provides an efficient culture medium as well as a preparation method and application thereof. The efficient culture medium is prepared mainly by culture medium component optimization and process improvement. The main raw materials of the culture medium mainly comprises the substances of yeast powder, cottonseed protein peptide, soybean cake powder, starch, sodium dihydrogen phosphate, sodium bromide, acetyl coenzyme A, rare earth element and the like, and the efficient culture medium is prepared by fully mixing the substances and making into micro powder. The efficient culture medium contains nutrient substances and microelement required by the growth of thalli, and specific precursors and accelerants, is capable of effectively promoting the production of a target product and inhibiting the generation of a by-product, and is especially suitable for tetracycline fermentation, and the yield and purity of a fermented product are high.

The invention discloses a treatment method of yellow or even black and odorous water caused by aquatic plant decay. Most of organic black colloids in water are settled by a composite flocculant, and a smelly substance residue remaining in the water is further deeply oxidized and degraded by using a composite oxidation deodorization material. The composite flocculant takes 10-50 microns of natural quartz sand as a core, and the quartz sand is subjected to surface modification by using CaCl2 and chitosan after pretreatment such as crushing, acidifying, firing and the like, so as to prepare an efficient composite flocculant. The comprehensive repair method provided by the invention is good in oxide removal effect on black and odorous substances of general water, such as sulfide protein, ammonia, amine and the like, and the removal rate is 70-90%. More importantly, the removal effect on a lot of vegetal fatty acids, nitro-compounds and indole odorous substances is 70-85%. The transparency and dissolved oxygen of the processed water are greatly improved, the sensory effects of the water are effectively improved, and a water-sediment interface microenvironment of local water is significantly improved.

The invention discloses an application method of bioremediation technology in aquiculture. The conventional culturing mode, particularly high-density culturing mode maintains the production mode mostly by consuming a large amount of high protein fodder and polluting the pond and the near-shore environment; and in order to prevent and control fish (shrimp) diseases, farmers use a large amount of shrimp medicaments such as disinfectant, antibiotic and the like, and the usage of the medicaments damages the ecological environment seriously. In the aged pond, toxic chemicals are deposited for years at the bottom of the pond to form black sludge and generate a large amount of toxic substances to influence the normal growth of shrimps. The method carries out bioremediation for the pond substrate sludge and the aquiculture water through measures of supplementing micronutrient, promoter and antidote or throwing beneficial microbe in the ecological system of the pond and the like; and the method reduces the content of organic substances in the pond substrate sludge, increases the diversity indexes of algae, stabilizes the algal phase, and increases the dissolved oxygen in water so as to improve the aquiculture capacity of the pond, improve the water quality, lower the cost and improve the culturing yield and quality.

The invention relates to a high dissolved oxygen bioreactor for the high-density culture of genetically engineered bacteria and a culture control method. The reactor comprises a tank body, wherein the top of the tank body is provided with a stirring driving motor, and an output shaft of the stirring driving motor is used for driving a stirring paddle and is connected with the stirring paddle; the bottom of the tank body is provided with a rotor driving motor, an output shaft of the rotor driving motor is used for driving a gas-liquid dispersion rotor and is connected with the gas-liquid dispersion rotor, the gas-liquid dispersion rotor is provided with an inner ventilation cavity which is provided with an air inlet at the top and an air outlet at the lower part, and the air inlet is connected with an under-pressure air source through a pipeline; the inner side at the bottom of the tank body is also fixedly connected with a gas-liquid dispersion stator provided with a diversion trench; the gas-liquid dispersion stator is located at the circumference of the gas-liquid dispersion rotor and is coaxial with the gas-liquid dispersion rotor to form a rotating pair. The method comprises a gas-liquid dispersion rotor ventilation control process, a gas-liquid dispersion rotor rotating speed control process and a stirring paddle stirring rotating speed control process. The high dissolved oxygen bioreactor is high in dissolved oxygen level and suitable for the high-density culture of the genetically engineered bacteria.

The invention relates to a layered high-density demersal breeding fish pond. The layered high-density demersal breeding fish pond is that at least one inhabiting layer structure is arranged in the center of the bottom surface of the fish pond; the inhabiting layer structures are overlapped, each comprising an inclination support for supporting a horizontal circular porous separating plate; the aperture of the porous separating plate is more than the maximum diameter of particle feed; the porous separating plate is provided with at least one fish passing hole through which fish can cross the upper layer and the lower layer to move; a water feeding pipe is vertically arranged in the center of the fish pond and horizontally communicated with horizontal water distributing pipes; each inhabiting structure is corresponding to at least four water distributing pipes; the bottom structure of the fish pond is high in middle, low in four sides, and about 3 to 5 degrees in gradient; a circle of downwards-concave sewage collecting tanks is formed in the bottom part of the wall of the fish pond; a plurality of sewage draining pipes are arranged below the sewage collecting tanks; a water returning pipe is arranged on the sidewall of the fish pond; a circulating water pump is arranged between the water returning pipe and the water feeding pipe to provide water circulating power. According to the layered high-density demersal breeding fish pond, water is treated by physical filtering, biological filtering, oxygen increase, sterilizing and other purifying links and then is recycled, so that breeding with circulating water can be achieved.

The invention provides a parallel bioreactor system. The parallel bioreactor system comprises: an oscillator for generating oscillatory motion; a plurality of culture containers mounted on the oscillator, wherein each culture container has an inner chamber, every inner chamber comprises an upper cylindrical part and a lower inverted frustoconical bottom part, the cross section of the cylindrical part coincides with the top cross section of the inverted frustoconical bottom part, and the bottom of the cylindrical part is connected with the top of the inverted frustoconical bottom part; disposable culture bags arranged in the inner chambers of the culture container and used for accommodating a culture solution, wherein each disposable culture bag has a multifunctional cover plate, the multifunctional cover plates are connected to the tops of the culture bags to seal the culture bags, and the multifunctional cover plates are provided with a plurality of access holes communicating with theinternals of the disposable culture bags; and a control system, wherein the control system controls the oscillatory motion of the oscillator and the parameters of the culture solution in the disposable culture bags.

The invention provides a drop-aeration water treatment system which comprises a microorganism filter pool and a drop dam. The microorganism filter pool comprises multiple stages of microorganism filter beds which are connected in series and provided with water inlet pipes at water inlets. The microorganism filter bed at the head end is connected with a water inlet pump. The microorganism filter bed at the tail end is connected with the drop dam. Each microorganism filter bed comprises carrier filler, an upper tempered glass grating plate covering the carrier filler, a floating bed arranged on a water body above the upper tempered glass grating plate, aeration nozzles laid blow the carrier filler, and a lower tempered glass grating plate arranged below the aeration nozzles. The system integrates biological and ecological processing, reoxygenation and the landscape effect, and is good in treatment effect and suitable for river channel water bodies.

A water treatment apparatus includes a first fluid channel that can circulate contaminated water in the water body, a first inlet that draws the contaminated water into the first fluid channel, and an outlet that allows the contaminated water to exit the first fluid channel. A second fluid channel installed with a filter therein can filter contaminated water in the water body to produce a filtered water flow. A fluid transport apparatus can draw the contaminated water through the first fluid channel and the second fluid channel. A flow control system allows water to flow in a predetermined angular range while blocking at least a portion of the remaining angular range in at least one of the first inlet and the outlet to achieve mixing coverage with different aspect ratio. The position of the outlet can be adjusted to optimize the flow rate and pattern.

The invention discloses an emulsifiable natural oil coating agent applied to a granulated compound feed. The emulsifiable natural oil coating agent comprises natural animal and vegetable oil, concentrated soybean lecithin oil, an emulsifying agent, an antioxidant, an anti-mildew preservative, a polar solvent, vitamins, amino acid chelated trace elements, probiotics and Chinese herbal medicine superfine powder. After mixing, the raw materials are stirred, dispersed and homogenized to obtain sticky paste; 5-10 times of clear water is added into the coating agent to form slurry in appropriate glutinousness, the coating agent and auxiliary agents thereof can be adopted for preparing the slurry, and the slurry can be mixed with water to be diluted for livestock and poultry breeding objects to drink and can also be mixed with the granulated compound feed to be used for feeding the breeding objects; when the mixed granulated compound feed is used for feeding aquaculture objects, dust is evidently reduced, and by hydrophilic and lipophilic characteristics of liposome and a phospholipid complex dissolved in aquaculture water, surface tension of water in a feeding area can be reduced, so that feeding stress response of the aquaculture objects is relieved, and implementation effects of a healthcare prevention and treatment scheme in aquaculture production are improved.

The invention provides an unmanned aquaculture oxygenation workstation and an oxygenating method. The unmanned aquaculture oxygenation workstation comprises a floating plate, a driving mechanism, an oxygenation mechanism and an oxygen injection mechanism, wherein the driving mechanism is arranged on the upper surface of the floating plate; the oxygen injection mechanism is annularly arranged on the periphery of the floating plate, and comprises a rubber water ring, a floating bucket, a valve, an air guide pipe, an assembly plate, exhaust duckbills and a three-way valve; the rubber water ring is fixedly arranged on the side wall of the floating plate, and the floating bucket is fixedly arranged in the rubber water ring; the oxygen outlet formed in the side wall of the floating bucket is fixedly connected with the oxygen inlet of the assembly plate through the air guide pipe; four exhaust duckbills which are arranged in an annular shape are fixedly arranged at the bottom of the assemblyplate, and each exhaust duckbill is fixedly connected with the oxygen vent formed in the bottom of the assembly plate; and the three-way valve is arranged on the air guide pipe. The unmanned aquaculture oxygenation workstation and oxygenating method have the advantage of increasing the mixing contact area of air and a water body.

The invention discloses a cell proliferation bag and a cell proliferation device, and belongs to the technical field of cell proliferation. The proliferation bag comprises a bag body with the sealed edge. The bag body is provided with diversion bodies, the diversion bodies are fit with the bottom surface of the bag body, the side length or the diameter of the bottom surface of each diversion body is 0.5 to 20 cm, and the height of each diversion body is 0.5 to 10 cm. The cell proliferation device comprises a tray and the cell proliferation bag arranged on the tray, and each of two opposite side edges of the bag body of the cell proliferation bag is provided with a fixing rod arranged along the edge of the bag body; the tray is provided with clamping buckles clamped with the fixing rods; a tray load-bearing surface contacted with the cell proliferation bag is provided with projecting diversion bodies, the side length or the diameter of the bottom surface of each diversion bodies is 0.5 to 20 cm, and the height of each diversion body is 0.5 to 10 cm. With the arrangement of the diversion bodies, a culture solution in the cell proliferation bag is allowed to generate upward diversion when moving in a two-dimensional plane, so as to mix uniformly the culture solution under a small shear force.

The invention provides a specific microorganism activating filler for treating black and odorous water bodies and belongs to the technical field of water treatment. The filler is prepared from the following raw materials in parts by weight: 3-5 parts of a microorganism inducer, 40-80 parts of an attachment carrier, 0-10 parts of an organic macromolecule polymer, 0-4 parts of an inorganic flocculate and 1-30 parts of an oxidization decoloring agent, wherein the microorganism inducer comprises nitrobacteria and / or denitrifying bacteria and a culture medium matter for the growth of the nitrobacteria and / or the denitrifying bacteria. The filler provided by the invention has the advantages that traditional water body purification is broken through; indigenous microorganisms of the water bodies are activated mainly and the water bodies per se serve as cultivating and breeding bases, so that the growth space of the microorganisms is greatly released, the effective biomass and the functionality of the microorganisms are increased, the microbial ecosystem of the water bodies is recombined, improved and optimized and the self-purification capacity of the water bodies is realized eventually.

The invention relates to a fermentation production method for xylitol, which is based on the mastery of principle of preparing the xylitol through fermentation of Pachysolen tannophilus. According to the method, the fermentation process comprises two stages of Pachysolen tannophilus proliferation and xylitol fermentation, at the first stage, fermentation liquor dissolved oxygen is improved through filling large amounts of oxygen so as to increase the proliferation speed of the Pachysolen tannophilus and shorten the fermentation time; and at the second stage, the oxidation-reduction potential of fermentation liquor can be adjusted through controlling feeding glucose amount, so as to improve the conversion efficiency of the xylitol. According to the invention, the production is carried out in a fermentation tank of 5000 L, the fermentation time is shortened to 36 hours, the xylose consumption rate is 95 percent, the xylitol conversion rate is 99 percent, and the production speed rate of the xylitol is 7.23 g / liter per hour. Compared with a conventional fermentation, the xylitol conversion rate is improved by 10 percent; the production speed rate is improved by 7 percent. The method integrates fermentation and regulation and control, has the advantages of being controllable, accurate and economical, and has a wide market prospect.

The invention relates to the technical field of an enzyme preparation, and particularly relates to a trichoderma reesei mutant strain and application thereof. After the mutant strain is subjected to shake-flask fermentation for 5 days, the enzyme activity of the neutral cellulase in fermentation supernatant fluid is 114m / ml, and is improved by 34 percent through being compared with that of an original strain; in the 20L fermentation tank small tests, the enzyme activity of the neutral cellulase in the fermentation supernatant fluid reaches 1335 u / ml; the amplification effect is obvious on theexpression quantity after the comparison with a shake-flask result; and the mutant strain has the advantages of thick and short mycelia, high dissolved oxygen level, low fermentation liquid viscosityand the like in the fermentation process; and the unexpected technical effects are achieved. The trichoderma reesei mutant strain can be widely applied to cellulase production, so that the productioncost of the cellulase can be favorably reduced; and the popularization and the application of the cellulase in relevant fields can be promoted.

A method for increasing the quantity of dissolved oxygen in water includes addition of an oxidant to the water to increase the oxidation-reduction potential (ORP) of the water to between about 400 and 850 mV, followed by electrolysis to generate oxygen gas. The voltage applied to the electrolytic cells during electrolysis is less than 300 mV. The dissolved oxygen content of the water exiting the electrolytic cell is about 90% of saturation to super saturation.

The invention discloses a semi-factory pond internal circulation culture system, and belongs to the technical field of aquaculture. The semi-factory pond internal circulation culture system comprisesa culture unit, a pollution discharge unit and a water purification unit, and is characterized in that the water outlet of the culture unit communicates with the water inlet of the pollution dischargeunit; the water outlet of the pollution discharge unit communicates with the water inlet of the water purification unit, and the water outlet of the water purification unit communicates with the water inlet of the culture unit; the culture unit includes a water tank, an aeration oxygen-increasing device, a submerged air-lifting device, a first-stage auxiliary oxygen-increasing device, a second-stage auxiliary oxygen-increasing device, a dead water prevention device and a material-blocking device; the pollution discharge unit comprises a primary pollution discharge device and a secondary pollution discharge device; and the water purification unit comprises a water purification unit body, a water pushing device, a microporous oxygen-increasing machine and aquatic plants. The culture systemdisclosed by the invention can effectively improve the dissolved oxygen content in inlet water, enhance the water pushing effect, increase the water exchange amount, increase the dissolved oxygen level, reduce the water body pollution, improve the feed utilization rate, and promote rapid growth of fish.

The invention discloses a black odoriferous water treatment method. The black odoriferous water treatment method comprises the following steps that exogenous solid-liquid waste is prevented from entering a polluted black odoriferous water body, and solid waste in the water body is preliminarily removed in a manual or mechanical salvage mode; after the solid waste residual body is removed and the exogenous solid-liquid waste is blocked, an activation composition is put in the black odoriferous water; the activation composition is prepared from silicon dioxide, titanium dioxide, activated carbon and iron powder; then a curing agent is put in the black odoriferous water body. The black odoriferous water treatment method can effectively improve the visual effect of the water body, improves the water transparency while remarkably reducing odoriferous substrates of the water body, improves dissolved oxygen level of the water body and improves the water body and a local micro-environment of surficial sediments. A corresponding product is expected to play a good treatment effect on removal of local phytogenic water body black odoriferous substances of rivers and lakes.

The invention discloses a static water body pollution treatment device which comprises a pipeline aeration component, a water circulating passage component and an ammonia-nitrogen degrading pool component. Two ends of a water body passage are open in a water body or on a band side, a water lifting device delivers water at one end of the passage to the other end of the passage, a pool body of the ammonia-nitrogen degrading pool component is arranged in the water body or, and the inside of the pool body is filled with a filler. A hose aeration system, an aeration hydraulic circulating device and ammonia-nitrogen degrading are adopted comprehensively for aeration and oxygenation, for local circulating, the reoxygenation process of the water body is accelerated, dissolved oxygen level of the water body is increased, activity of aerobic microorganisms in the water body is restored and enhanced, polluting substances in the water body are purified, the static water body pollution treatment device is novel low-energy-consumption water body fluidization technology and has remarkable environment-protection and economic value; the static water body pollution treatment device is quite low in energy consumption, runs by micropower, can realize long-time, automatic, efficient and stable running when being matched with a solar device, and can completely meet requirements on pollution treatment of static water bodies like riverways and ponds.

The invention belongs to the technical field of sewage purification, and particularly discloses an in-situ ecological ditch pollution interception and purification method for a water supplementing system. The method comprises the following steps: (1) salvaging sludge at the bottom of a river channel, screening, separating and culturing indigenous microorganisms, domesticating, and re-feeding the domesticated indigenous microorganisms into the river channel; (2) reconstructing the river channel into an ecological ditch, and successively dividing the ecological ditch into a microorganism restoration area, an aeration area, a denitrification area and a plant absorption area; (3) arranging an aeration filter apparatus in the aeration area, and enabling the aeration filter apparatus to run continuously for 6 to 10 hours; cleaning up impurities isolated in the aeration area every 25 to 40 days; and (4) purifying the water in the ecological ditch by virtue of the microorganism restoration area, the aeration area, the denitrification area and the plant absorption area to finally flow into the secondary rivers and lakes. By using the method of the invention, the sewage is purified in situ in the water supplementing system, so that the water flowing into the secondary rivers and lakes is ensured to be clean, and no secondary pollution is caused.

The invention discloses a straight-through type in-situ remediation rod for river sediment pollution treatment. The invention belongs to the technical field of ecological environmental protection. Anin-situ remediation mode can be adopted. The remediation rod is directly inserted into the river sediment, natural wind is used as source power, and an internal and external isolation magnetic force guiding mode is used to transfer power into the remediation rod. Then, an aeration layer is extruded to release air in the aeration layer. Meanwhile, external air on the water surface is supplemented,the dissolved oxygen level of the river sediment area is continuously increased, therefore, the microbial action in the sediment is obviously improved, and the decomposition treatment on an ammonia nitrogen pollution source is accelerated. Meanwhile, a plurality of micro-nano bubbles can be slowly generated during aeration, the pollution treatment effect of the river sediment is comprehensively promoted by utilizing the enhanced decomposition and biological purification functions of the micro-nano bubbles on organic pollutants, secondary pollution is not easily caused, the treatment cost is relatively low, and the original river ecological environment is hardly influenced.